JP5238218B2 - Commutation cam drive mechanism of pachinko ball rectifier - Google Patents

Description

  The present invention relates to a rectifier that is interposed in a feeding path for supplying a pachinko ball from a ball tray of a pachinko game machine to a ball launcher, and in particular, is arranged in the rectifier and launches a single pachinko ball by intermittent rotation. The present invention relates to a drive mechanism for a rectifying cam supplied to the section.

  The launching (or launching) structure of a typical pachinko game play ball (pachinko ball) is to store prize balls and purchased balls in a ball tray placed in front of the play table, and then use a ball guide cage. The ball is supplied to a ball launcher installed at the lower part of the back side of the front frame body, and is hammered one by one on the game board surface by hitting the hammer with a predetermined time interval.

  Therefore, the pachinko balls that flow in a continuous line (so-called rosary chain shape) according to the movement of the hammer hitting intermittently are supplied one by one to the ball launching unit according to the movement of the hammer hitting intermittently. There is a need to. In order to perform this intermittent supply, a so-called rectifier is attached to the feeding path from the ball tray to the ball launching unit.

  This rectifier is a device that intermittently divides the pachinko balls that have flowed in a continuous line by supplying the rectifier means to the next part (sphere launcher) by repeatedly operating the rectifier means with a constant stroke. As an example of this apparatus, there is an invention disclosed in Patent Document 1. As shown in FIGS. 6 and 7, the disclosed invention is configured such that an electromagnet c is formed by passing an inverted U-shaped iron core b made of a ferromagnetic material through an electromagnetic coil a, and below the electromagnet c. A rectifying cam e that is pivotally supported by a rotating shaft d and rotates up and down between a predetermined angle is disposed, and a movable magnetic piece f made of a ferromagnetic material is provided on a side surface (rotating shaft extension side) of the rectifying cam e. Is fixed. The movable magnetic piece f has an arrangement configuration in which the movable magnetic piece f faces the one end surface of the iron core b with a predetermined distance.

  The operation of the rectifying cam e is such that no magnetic attractive force is generated because no magnetic flux is generated in the state where the electromagnetic coil a is not energized (“interruption”), as shown in FIGS. 6 (A) and 7 (A). As shown in FIG. 7 (A), the straightening cam e supported on the shaft rotates downward, and the pachinko ball Pa held in the upper surface recess e1 of the straightening cam e is sent to the ball launching section (not shown). At the same time when one is sent out, the subsequent pachinko ball Pb flowing in from the ball introduction port h of the mounting base g is received by the upper end corner portion e2 of the rectifying cam e.

  Next, when the electromagnetic coil a is energized, the magnetic flux strengthened by the iron core b passes through the movable magnetic piece f, so that a magnetic attraction force acts on the movable magnetic piece f, and FIG. As shown in (B), the movable magnetic piece f is attracted to the magnetized surface b1 of the iron core b. As a result, the rectifying cam e rotates upward, and only one pachinko ball P is received in the upper surface recess e1 of the rectifying cam e. Thereafter, if the electromagnetic coil a is cut off, the rectifying cam e rotates downward as described above, and the pachinko ball P is sent out from the upper surface recess e1. Thus, by repeating energization and shielding of the electromagnetic coil a, it is intermittently sent to the ball launching unit one by one.

In addition, there is Patent Document 2 that uses a linear solenoid for the drive mechanism of the rectifying cam of the rectifier, and Patent Document 3 that uses a rotary solenoid.
JP 09-131429 A (page 2-3, FIG. 2) JP-A-10-314381 (page 2-3, FIG. 3) Japanese Patent Laid-Open No. 06-312046 (page 2-3, FIG. 3)

  In any of the disclosed technologies described above, a magnetic material such as an iron core is used as the core material for the electromagnetic coil. This structure is normally performed to increase the magnetic force of the electromagnet, and the magnetic member integrated with the rectifying cam is attracted by this magnetic force to drive the rectifying cam.

  However, in such a structure, the magnetic attraction force is weak when the distance from the iron core to the magnetic body attached to the rectifying cam (hereinafter abbreviated as “attraction distance”) is long, and when it is too close, the characteristic becomes excessive. there were. In other words, the magnetic attraction force tends to increase in a quadratic function as the attraction distance becomes shorter. Therefore, when a large iron core is set for the purpose of obtaining a sufficient suction force even at a long suction distance, there is a disadvantage that an excessive suction force is generated at a short suction distance and the efficiency of the suction force is rather poor. It was.

  In addition, in the case of a large rotation stroke, a shock and noise due to shock at the time of magnetic attachment to the iron core will be caused, so it is necessary to interpose a cushioning material on the magnetic adhesion surface of the iron core, increasing the number of parts and the operation. There was a risk of lowering reliability.

  In addition, when a general magnetic material such as iron is used as the magnetic material, the attractive force increases due to remanent magnetization due to repeated use over many years, and the movement of the commutation cam in the downward direction due to its own weight is delayed. There was a risk that the ball could not be delivered smoothly.

  Therefore, the commutation cam drive mechanism of the pachinko ball rectifier according to the present invention has been made in consideration of such problems, and its purpose is to flatten the change in the attractive force with respect to the magnetic material. An object of the present invention is to realize a stable and efficient rotation stroke of the rectifying cam, and to reduce cost, size, and power saving.

  In order to solve the above problems, a commutation cam drive mechanism (hereinafter abbreviated as “application drive mechanism”) of a pachinko ball rectifier according to the present invention is configured as follows.

Driving a rectifying cam that is arranged in a rectifier interposed in a feed passage for supplying a pachinko ball from a ball tray of a pachinko game machine to the ball launching unit and that is supplied to the ball launching unit one by one by intermittent rotation operation In the mechanism, an air-core electromagnetic coil is arranged on the shaft support side of the rectifying cam that is rotatably supported, and a permanent magnet is integrated with the rectifying cam at a position facing the end surface in the winding axis direction of the electromagnetic coil. It is arranged and configured. In particular, the permanent magnet is disposed at a position on the vertical plane where the center of gravity of the total weight of the permanent magnet and the rectifying cam generates a downward rotating moment on the rotating shaft of the rectifying cam. It is characterized by that.

  The integration of the permanent magnet into the rectifying cam is achieved by attaching the permanent magnet to the rectifying cam rotating shaft in a detachable position at a predetermined distance in the vertical radial direction from the rotating shaft of the rectifying cam. Is going. The permanent magnet used here is appropriately selected from materials such as ferrite, neodymium, and samarium in consideration of necessary coercive force. Further, the permanent magnet can be replaced if necessary or in response to product specifications.

  Moreover, the shape of the permanent magnet is not limited to a plate shape or a rod shape, and the attachment position is integrally attached to the side surface portion on the shaft support side of the rectification cam, and the attachment position is the sum of the permanent magnet and the rectification cam. The position of the center of gravity is deviated from the center of gravity so that the position of the center of gravity acts as a moment for rotating the rectifying cam downward. As a result, when the electromagnetic coil is shielded, that is, in a state where it does not function as an electromagnet (referred to as “initial state”), the rectifying cam remains rotated downward.

  In the present invention, as a drive mechanism for the rectifying cam, instead of a conventional solenoid mechanism configured by a correspondence relationship between an electromagnet fitted with an iron core and a magnetic body (iron metal) that does not generate magnetic force itself, The drive mechanism of the rectifying cam is configured by the correspondence between the electromagnet and the permanent magnet, and the following effects are achieved.

FIG. 5 is a graph showing changes in suction force according to the present invention and the conventional mechanism. This graph shows that for the same power (wattage), the conventional product has an attractive force compared to the force required to drop the pachinko ball at the A position (the position where the movable magnetic piece and the iron core are farthest). In the B position (position where the movable magnetic piece and the iron core are closest to each other), there is no allowance, indicating that an excessive force is acting on the force necessary to drop the pachinko ball.
On the other hand, in the case of the mechanism using the permanent magnet of the present invention, the attractive force becomes flatter (almost flat) with respect to the change in the operating angle, so the A position (the position where the permanent magnet is farthest from the electromagnetic coil). ), The attraction force was sufficient for the force required to drop the pachinko ball, and the result was that excessive force did not work even at the B position (the permanent magnet was closest to the electromagnetic coil). . That is, when a margin equivalent to that of the conventional mechanism is viewed with respect to the force required to drop the pachinko ball at the A position, the current flowing through the electromagnetic coil can be reduced and the power consumption can be suppressed. This also means that the amount of electricity supplied to the electromagnetic coil can be reduced and the amount of heat generated can be suppressed.

Further, since the impact (force and sound) at the time of magnetic attachment is reduced at the B position, it is possible to eliminate a shock absorbing rubber or other cushioning material. As a result, the reduction and durability of the parts can be increased, and the cost can be reduced.
Furthermore, since the difference in the suction force is smaller at the A and B positions compared to the conventional mechanism, when the operation by suction cannot be used (when the arrangement shown in the figure is difficult due to structural problems such as space), the electromagnetic coil By applying a reverse magnetic field to, it is possible to easily convert to an operation by separation (forced separation by repulsive force).

  Hereinafter, the best embodiment of a motor according to the present invention will be described in detail with reference to the drawings. First, FIG. 1 is an exploded perspective view showing a component configuration of the rectifier of the present embodiment, FIG. 2 is a perspective view showing the inside of the assembled state of the rectifier of the present embodiment, and FIG. 4 is a cross-sectional view taken along line AA of FIG. 4, FIG. 4 is a cross-sectional view showing the operating state of FIG. 2 along the line BB, and FIG. 5 shows the suction force of the drive mechanism according to the present invention in the past. It is a graph shown in comparison with a mechanism.

  The pachinko ball rectifier 1 is attached near the lower part of the back side (game board side) of a front opening / closing front frame (not shown) for covering the front of the pachinko game board with a glass surface. It is arranged in the middle of a ball bowl that is sent from a ball tray (not shown) arranged at the lower part of the front surface side (player side) to the ball launching portion on the back surface side. The pachinko ball rectifier 1 includes a base body 2 for attaching the front frame body to the back plate, and a cover body that is fitted to the base body 2 so as to secure a certain space inside and fit and fix. 3 forms a casing. Inside the casing, a rectifying cam 4 is rotatably held on the cover body side, and driving means for rotating the rectifying cam 4 is disposed. Near the upper right side of the base body 2 (in FIG. 1), a ball introduction port 20 for introducing the pachinko ball P from the ball tray is formed. The cover body 3 on the side facing the base body 2 is provided with a bowl-shaped ball guide 30 that guides the pachinko sphere P from the sphere introduction port 20 to a ball receiving recess 40 formed on the upper surface of the rectifying cam 4. Forming. The ball guide 30 has a shape in which the pachinko ball P temporarily retained in the ball receiving recess 40 is connected to a delivery port 31 that supplies the ball launching unit (not shown).

  Next, the drive mechanism for rotating the rectifying cam 4 which is the subject of the present invention is constituted by an electromagnetic coil 5 and a permanent magnet 6 integrated with the rectifying cam 4. The electromagnetic coil 5 is held on the holding base 50 and attached to the base body 2 in an air core state in which an iron core or the like is not attached to the winding shaft portion.

  On the other hand, the permanent magnet 6 is attached to a rod-shaped holding body 42 that is integrally formed on a side surface that is separated from the rotation shaft 41 of the rectifying cam 4 in the vertical radial direction. The holding body 42 is formed along the rotation shaft 41 from the side surface of the rectifying cam 4, and the position on the side surface is a fixed distance (distance in the rotation radius direction) so that a rotational moment is generated on the rotation shaft 41. If the magnetic attraction force is not generated, the rectifying cam 4, the holding body 42, and the permanent magnet 6 are set so as to rotate downward due to the drooping load from the combined center of gravity position. This state is the initial state of the rectifying cam 4. The attachment of the holding body 42 and the permanent magnet 6 may be integrated by insert molding. However, in consideration of assembling properties, in this embodiment, a mounting hole for inserting the permanent magnet 6 is provided at the tip of the holding body 42. After being provided and molded, the permanent magnet 6 is inserted and integrated into this, and can be removed if necessary.

  When the cover body 3 is assembled to the base body 2 in such a configuration, the rectifying cam 4 is positioned substantially obliquely below the lateral side of the electromagnetic coil 5 and is held by the holding body 42 attached to the side surface from the rectifying cam 4. 6 will be installed in the position which faces the one end surface (magnetization surface) of the winding direction of the electromagnetic coil 5.

  Next, the operation of the pachinko ball rectifier 1 configured as described above will be described. When the energization of the electromagnetic coil 5 is interrupted (“interruption”) and the magnetic force from the electromagnetic coil 5 disappears, the magnetic attractive force strengthened by the synergistic action with the permanent magnet 6 becomes weaker, and FIG. ), As shown in FIGS. 4B-1 and 4B-3, the rectifying cam 4 rotates downward by its own weight. Then, as shown in FIG. 4 (B-3), one pachinko ball P retained in the ball receiving recess 40 of the rectifying cam 4 is sent out from the delivery port 31 and at the same time, the ball introduction port 20 of the base body 2. The succeeding pachinko ball P introduced from the top is received by the upper end corner 43 of the rectifying cam 4 and the ball guide 30.

  Next, when the electromagnetic coil 5 is energized, a magnetic flux is generated. Due to the synergistic action of this and the magnetic flux from the permanent magnet 6, a strong magnetic attractive force acts to cause a rotational moment to act on the rotational shaft 41 of the rectifying cam 4. . As a result, as shown in FIGS. 3 (A-2) and 4 (B-2), the rectifying cam 4 rotates upward to receive and retain one pachinko ball P in the ball receiving recess 40. It becomes. Next, when the standby time until the hammer (not shown) at the ball launching part is finished is set and the electromagnetic coil 5 is shut off, the rectifying cam 4 is rotated again in the above-described process, and the ball receiving recess 40 is moved. One pachinko ball P that has been retained is sent out.

  In this way, the pachinko ball rectifier 1 repeats energization and interruption of the electromagnetic coil 5 at regular intervals, thereby intermittently pachinko balls P, which have flowed continuously in a daisy chain, one by one. Will be sent to.

  The activation of the rectifying cam 4 is not caused only by the magnetic flux generated by the electromagnet on one side as in the conventional solenoid activation, but by the permanent magnetic flux from the permanent magnet 6 and the electromagnetic coil 5. The necessary magnetic attractive force is ensured by a synergistic action with the variable magnetic flux. For this reason, while being able to reduce the energization amount to the electromagnetic coil 5, the change gradient of the attraction force with respect to the separation distance can be made flatter. As a result, the present invention can reduce the occurrence of damage to the magnetic body due to excessive magnetic attraction and noise generated by conventional devices, ensure stable operation, and improve durability and reliability. The present invention discloses a new and advanced technical idea that has an effect that can be enhanced.

It is a disassembled perspective view which shows the components structure of the rectifier of a present Example. It is a perspective view which shows the inside of the state which assembled | attached the rectifier of a present Example. It is sectional drawing which showed the operation state in the AA line cross section of FIG. It is sectional drawing which showed the operation state in the BB sectional view of FIG. It is a graph which shows the attraction | suction force of the drive mechanism concerning this invention in comparison with a conventional mechanism. It is a cross section which shows the operation process of the conventional commutation cam. It is a cross section which shows the operation process of the conventional commutation cam.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pachinko ball rectifier 2 Base body 20 Ball introduction port 3 Cover body 30 Ball guide 31 Outlet 4 Rectification cam 40 Ball receiving recess 41 Rotating shaft 42 Holding body 43 Upper end corner 5 Electromagnetic coil 50 Holding base 6 Permanent magnet P Pachinko ball a Electromagnetic coil b Iron core b1 Magnetized surface c Electromagnet d Rotating shaft e Rectifying cam e1 Top surface recess e2 Upper end corner f Moving magnetic piece g Mounting base h Sphere inlet

Claims (2)

A rectifying cam is installed in a rectifier interposed in a feeding path for supplying pachinko balls from the ball tray of the pachinko game machine to the ball launching unit, and supplies a continuous ball flow to the ball launching unit one by one at regular intervals. In the drive mechanism for moving,
An electromagnetic coil in an air-core state is disposed on the shaft support side of the rectifying cam that is rotatably supported,
A permanent magnet is integrated with the rectifying cam at a position facing the end surface in the winding axis direction of the electromagnetic coil ,
The pachinko ball rectifier is characterized in that the position of the permanent magnet is set such that the position of the center of gravity of the total weight of the permanent magnet and the rectifying cam generates a downward rotational moment on the rotating shaft of the rectifying cam . Commutation cam drive mechanism. In the arrangement of the permanent magnet to the commutation cam,
2. A rectifying cam drive mechanism for a pachinko ball rectifier according to claim 1, wherein a permanent magnet is detachably attached at a position spaced apart from the rotating shaft of the rectifying cam by a predetermined distance in the vertical radial direction.

Images